PD12-35 Piloted 2-Way Spool, Normally Open, (PD12-35)
A screw-in, cartridge-style, pilot-operated, spool-type, normally open hydraulic direc-tional valve for two-way circuits requiring remote pilot actuation.
Product Operation
In neutral (unpiloted), the PD12-35 allows flow from ➁ to ➂. The spring bias chamber is internally vented to ➂On remote pilot signal at ➀, the valve shifts to block ➂ to ➁ bidirectionally.Note: Back pressure at ➂ will increase the pilot pressure required at ➀ to shift, at a ratio of 1:1. Consult factory.
Consult factory for applications where bi-directional flow is required when the valve is
in the normal or spring-offset position.
Product Features
• Hardened spool and cage for long life.• Industry common cavity.
Product Ratings
Operating Pressure: 240 bar (3500 psi)
Proof Pressure: 420 bar (6090 psi)
Flow: See Performance Chart
Internal Leakage: 82 cc/minute (5 cu. in./minute) max. at 207 bar (3000 psi)
Pilot Pressure Required: To Full Spool Shift for 7.6 bar (110 psi) spring: 8.6 bar (125 psi)
Oil Volume Required to Full Shift: 1.32 cc (0.08 cu. in.)
Temperature: -40 to 120°C with standard Buna seals
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of 7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: No restrictions; See page 9.020.1
Cavity: VC12-3; See page 9.112.1
Cavity Tool: CT12-3XX; See page 8.600.1
Seal Kit: SK12-3X-MM; See page 8.650.1
